The nutrition constituents in Scophthalmus maximus skirts were analyzed in this research.The results showed that the contents of crude fat and total amino acids content in Scophthalmus maximus skirts reached up to 4.2% and 12.22%, respectively. The contents of essential amino acids and flavour amino acids occupied 20.81% and 59.2% of total content respectively. And index of essential amino acids was 91.3. Scophthalmus maximus skirts were rich in minerals and its non-essential minerals accorded with the requirements of GB18406.4-2001. Considering that the first limited amino acid being of valine with higher content of lysine, Scophthalmus maximus skirt was not an ideal protein source but a kind of safe reinforcing food with soft and delicious feeling.